{
  "manageEntity": {
    "action": "Update",
    "entityId": "637335360",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xffac04ca7c6114ac23717932c9b74d88c21fec9d19f63a6cd5713a1481bb1d68",
    "signature": "0x8843ac3c67f7eac741023779422b2a76adb457203b93d1afa23c46560aecd28d0a4482395e1041401ab0d2878d66853099c9585f6e4ab7cf393872bd804957a01b",
    "signer": "0xb9ae2aD406d36a9257891ee20A0D3B2d0F8b414f",
    "userId": "637335360"
  }
}